Does anyone have a good, relatively inexpensive source for double or triple wall polycarbonate panels? Preferably in the Pacific N.W. or West Coast USA. I need to re-cover two 8'w x 16' l x 8' h, gothic roof style houses.

I have a double wall greenhouse with auto water system, auto vents and heat. We ordered a kit comes complete all we added were battery op drills to put it together.
It's over 25 years old and still going.
My son and I put it together in a less than a week. It's easy and long lasting . It's out wintered several snow and wind storms. I also added panels over a patio connected to the house to let light in for a greenhouse open air/ shade effect for summer plants.

https://www.greenhousecatalog....

Take a look at Greenhouse Megastore, too. https://www.greenhousemegastor...

Charley's Greenhouse is located somewhere up there but I doubt they can compete with Greenhouse Megastore (located in Sacramento).

The place Bea suggested is in Oregon.

If you live east of the Rockies, Greenhouse Megastore ships from their Danville, IL location.

The Pacific Northwest is WAY west of the Rockies. And, Greenhouse Megastore has a location in Sacramento. That's in California.

Didn't remember he was in the PNW. For some reason, I was thinking New England.

Try Mulberry Greenhouses. They are in Oregon and is the vendor for my Solexx greenhouse, which uses double wall polycarbonate. It is pretty easy to work with depending on your "handiness." The panels are available in sheets or in rolls to suit a wide variety of projects. I think you can even order the panels through Amazon. I'm pretty happy with my Solexx greenhouse.
http://mulberrygreenhouses.com
http://www.solexx.com/solexx-g...

I've seen twinwall polycarbonate panels at Home Depot in the past.

I bought quite a lot of multi-wall polycarbonate sheet for my greenhouse from Sundance Supply. Just checked and they srill have a website. They had a materials calculator that included moldings and such, that was useful.

https://www.duralightplastics....

76Terra said: Try Mulberry Greenhouses. They are in Oregon and is the vendor for my Solexx greenhouse, which uses double wall polycarbonate. It is pretty easy to work with depending on your "handiness." The panels are available in sheets or in rolls to suit a wide variety of projects. I think you can even order the panels through Amazon. I'm pretty happy with my Solexx greenhouse.
http://mulberrygreenhouses.com
http://www.solexx.com/solexx-g...

@76Terra

I bought the greenhouse kit just like your pic. The link is posted above and in Oregon. It;s been in use for over 25 years. Thru many snow, wind , rain storms Mother Nature has thrown at it and it's still standing and in use…
They are available in many sizes, styles .

jmillerent said: Does anyone have a good, relatively inexpensive source for double or triple wall polycarbonate panels? Preferably in the Pacific N.W. or West Coast USA. I need to re-cover two 8'w x 16' l x 8' h, gothic roof style houses.

In case there is anyone reading who didn't start at the top. jmillerent wants panels to fit two gothic style already standing greenhouses. Its not a new build.

DaisyI said: In case there is anyone reading who didn't start at the top. jmillerent wants panels to fit two gothic style already standing greenhouses. Its not a new build.

The Solexx panels can be attached to any frame work with appropriate spacing intervals; they don't have to be installed on a hoop house. In fact, Solexx has all sorts of fittings, fasteners, and edgings to accommodate structures such as gothic greenhouses, shed conversions, custom buildings, etc. They are also willing to assist customers with recommending the most economical use of the panels to suit their project needs and minimize the project cost. The Solexx webpage has information and images of the panels in use on a variety of structures for potential customers to review.